<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item, index) in titles" :key="index" 
        class="title-item" @click="titleClick(index)"
        :class="{active:index === currentIndex}">
          {{item}}
      </div>
      <div slot="right" class="oneFixed">

      </div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'
export default {
  name:'DetailNavBar',
  data() {
    return {
      titles:['商品','参数','评论','推荐'],
      currentIndex:0
    }
  },
  components:{
    NavBar
  },
  methods:{
    titleClick(index){
      this.currentIndex = index
      this.$emit('titleClick',index)
    },
    backClick(){
      this.$router.back()
    }
  }
}
</script>

<style scoped>
.title{
  width: 420px;
  display: flex;
  font-size: 13px;
  
}


.title-item{
  flex: 1;
}

.active{
  color: var(--color-high-text);
}

.back{
  width: 50px;
}
.back img{
  margin-top: 12px;
  margin-left: 12px;
}
.oneFixed{
  width: 160px;
}
</style>